Ami M, Herbuté S, Ramade F, Bouillé C, Baylé J D
C R Seances Soc Biol Fil. 1982;176(5):670-4.
Plasma thyroxine and corticosterone levels were determined by competitive protein binding assay, at 3 hr intervals, throughout the photoperiod. Pigeons were kept in controlled environment (21 +/- 1 degree C; 14L6-20: 10D). Intact controls exhibited low thyroxine (T4) and corticosterone (B) levels for the light phase of the photoperiod. Values were rising during the night, up to a peak at 03 hr. Electrolytic lesions were placed bilaterally in either the nucleus anterior medialis hypothalami or the n. preopticus, or the n. supraopticus. Circadian rhythms of both T4 and B were markedly altered in all lesioned pigeons, with a shift of very high T4 values to the morning times and a complete disorganization of B patterns, with very heterogeneous values. The possibility is raised that anterior hypothalamic formations participate in the endogenous oscillator circuitry in birds.
在整个光照周期内，每隔3小时通过竞争性蛋白结合分析法测定血浆甲状腺素和皮质酮水平。鸽子饲养在可控环境中（21±1摄氏度；14L6-20:10D）。完整对照组在光照周期的光照阶段甲状腺素（T4）和皮质酮（B）水平较低。数值在夜间上升，在03时达到峰值。双侧电解损伤下丘脑前内侧核、视前核或视上核。所有损伤鸽子的T4和B的昼夜节律均明显改变，T4的极高值转移到早晨，B模式完全紊乱，数值非常不均一。这就提出了下丘脑前部结构参与鸟类内源性振荡器电路的可能性。
